Spring-hammer.



J. H. PHILLIPS.

SPRING HAMMER.

APPLIOATION FILED DB0. 1s, 1909.

1,006,873 Patented 001;. 24, 1911.

2 SECRETS-SHEET 1.

WITNESSES ATTO/NVE YS J. H. PHILLIPS.

SPRING HAMMER.

AIPLIOATION FILED D110. 18, 1909.

1,006,873, Patented 001.2111911.

2 SHEETS-:SHEET 2.

will@ ATTOR/VE YS JOHN 'HARRY PHILLIPS, or oHLaHoraa, cucita# l ermite-Hman.

jjjqyg'o Specification of Letters Pat-ent. @ifijgliliwilll;

. application-mea December laicos. semaine. teaser.'

To all'wh'om'z't mn/y concern. is held to the barrel 1 by aan 10 located Be it known that I, JOHN H. PHILLIPS, between the end' of the barrel-l and the 55 a citizen of theUnited States, and a resicap 7. dent vof Oklahoma cit in the county of Centrally .located Ain theliushin' 9,'.and Oklahoma and State ofy Oklahoma, have 'inpassing through an opening e cap 7, vented" a new and Improved Sprlng-Hamthere is provided a tool 1'1, whichfmay be of mer, of which the following is a full, clear, any suitable form. This tool' 11-is provided 60 and exact description. 4 i witha slot 12, which-is engaged by a lock or This inventlon relates-to ya portable hamj s top 13 secured in the bushing 9. The relamer for shop or iield work, wh1ch 1s adaptt1ve size of the slot 12 and the lock 13 is such ed to be used in various operatlons, such as to allow a` limited movement of the tool as riveting, punching, calking, shearing, 11 relative tothe bushing-9 and the barrel 1. 65

erence indicate corresponding parts in all vided with a knurled finger head 23, whereciic parts of my invention, 1 indicates a manner. The opening'inthe cam casing 29 there iS provided a il'lbulalfl 9, WhCll' as by means 0f an angular connection. In

spike drlving, stone, brick and concrete Slidingly mounted in the barrel 1 adjadril1ing', etc. cen't to the inner end of the tool 11, there is An object of this invention is to provide provided a plunger 14, which is adapted to an automatic trip hammer which receives reciprocate in the barrel 1. The end of the its motive force from a compressible spring, Iplunger 14 opposite to the end adjacent to 70 the' latter having `means thereon whereby the too l 1 1 is provided witha-head ,1d-which, i the tension maybe adjusted. is connected tdthebody the-plunger by; A further object of this 'inventionis'to la stem 16. The ,pljinger'is normally' actuprovide 'a device which will be simple in ated by a spring 1 7 which abuts against the; construction,` inexpensiwJ to manufacture, @head vl5 at one end-,and against dan adjieer-1't2v 75 easily operated and easily adjusted. 'nut 18 at the other end;4 -Thefnut 181i's pro-1 These and further objects,'together with 'vided with a key 19, which engages a slot the constructionv and combination of parts, 20" in,the barrel 1 and is thus prevented will be more fully described -hereinafter and from rotatingrelatfve totle' barrel 1.' The particularly set forth in the claims. nut 18' has a screw-threaded engagement 80 Reference is to be had to the accompanywith an adjusting screw 21, which is rotaing drawings forming a part of this speci. tably supported in the handle G by means of fication, in which similar characters of ref# ca l'cyliidricalplug 22.' The plug'- 22 is prothe views, in whichby it may be more easily manipulated to ro- 85 Figure 1 is a vertical longitudinal section tate the screw 21. y through the Center 0f my device, Showing In order t0 compress the spring 17 and the parts in one position; Fig. 2 is a fragdraw the plunger 14 away from the tool 11, mentary view similar to Fig. 1, showing the there is provided a member 241, which is in parts in another position; Fig. 3 is a vert1 the form of a gear provided wit-h a plurality 90 cal transverse section on the line 3-3 of of cam teeth 25. The Vmember 24""is secured Fig. l.; Fig. 4 'iS a Vertical transverse SeC- to a lshaft, 26 by any suitable mgans, suoli as tion on the line 1 -4 of Fig. 1; Fig. 5 is an angular connection, andis'adapjte'd tobe a vertical transverse section through the rotated thereby. The shaft V26 is rotatably cam shaft casing; and Fig.- 6 is a vside view supported by means of a plurality ofjonrnal 95 in elevation. ear-ings 27 and 28 in a ca m casing 29, which Referring more particularly to the speis secured to the barrel f 1 *i'n any well'known barrel, to which is secured at one end in any 'is olosedjby means of a suitable* dust-guard well known manner, as by means of a screw 30, wHioh" is secured thereto any well 100 threaded COIlIleCtOIl, a. handle 6, Which may known manner, as by means 0f a plurality be, if desired, y'in the form of a breastplate. of screws 31, The outer ends of the shaft Secured in the opposite end of the barrel 1 26 which project beyond the casing, 29 are by means of a cap 7 which has a screweach provided with a hand,ora1 il'f32, whioh threaded connection 8 with the barrel 1, iiss'eured thereto in anyWolFknownmanner, 105

order to .prevent the cranks 32 from slipping off the shaft 26, there are provided at the ends thereof washers 33, which are secured to the shaft 26 by means of screws 34.

The operation of the device will be readily understood when taken in connection wit the above description.

The proper tool 11 for the work to be done is inserted in'the barrel l and placed against the article on' which the work is to be performed. The tool is held against the work by means of the handle 6, which may beused as a breastplate if desired. The cam shaft 26 is then rotated by means of the crank 32. When this is done, the lunger 14' will be drawn away from the todi 11 by one of the cams 25 engaging the head 15, thus compressing the spring 17. When the cam teeth 25 slip by the head 15, the plunger 14 will be automatically released and the spring 17 will force it rapidly against the inner end of the tool 11. This operation will be continuous. Each successive cam tooth 25 coming in engagement with the head 15 will automatically compress the spring 17 and release the plunger 14, ermitting it to slam against the inner en of the tool 11. Any strength of blow may be obtained by adjusting the position of the nut 18 on the screw 21, and thus adjusting the compression of the spring 17.

While I have shown the device operated by-a pair of hand cranks, it may be operated in any other well known manner, as by means of a single lever connected to the shaft 26 by a ratchet and pawl connection, or in any other suitable manner.

Having thus described my invention, I claim as new and desire to secure by=Letters Patent 1. In a device of the class described, the combination with a barrel, of a tool connected to said barrel, a plunger adapted to operate said tool, means for operating said plunger in one direction, a spring for operating Said plunger in the opposite direc tion, a non-rotatable nut adapted to adjust the tension of said spring, and a screw rotatably connected to said barrel and engaging said nut.

2. In a device of the class described, the combination with a barrel, of a tool connected to said barrel, a plunger adapted to operate said tool, means for operating said plunger in one direction, a spring for operating said plunger in the opposite direction, a nut adapted to adjust the tension of said spring, a key on said nut engaging said barrel and adapted to prevent the rotation of said nut relative to said barrel, a screw adjustably engaging said nut and rotatably connected to said barrel, and means for rotating said screw. j

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN HARRY PHILLIPS.

Witnesses:

' T. R. ANDERSON,

A. F. DICHMAN. 

